Applying a clear scratch-resistant coating to the front and back of lenses increases their durability. Most modern lenses come with scratch-resistance built-in. If yours don't, you can usually add it for a small additional cost.
Anti-reflective coating, also called AR coating or anti-glare coating, eliminates reflections from your lenses. This increases comfort and visibility, especially when driving, reading, or using a screen at night. It also makes your lenses nearly invisible so that others can see your eyes through your lenses.
Anyone with glasses in a cold climate is familiar with the fogging that happens to your lenses. Anti-fog coating can help eliminate this effect. There are permanent anti-fog treatments available, as well as weekly drops to treat your lenses yourself.
UV-Blocking Lens Treatment
Think of this as sunblock for your eyeballs. Adding a UV-blocking dye to your lenses will reduce the number of UV rays that reach your eyes. UV light contributes to the development of cataracts.